On: Farmer born in 1842 talks about life and change (1929) [video]

[OJFord]

But that's just saying 'trust that someone else did' isn't it? I take the question to be, say USC discovers (thinks it's discovered) a new similar recording, what can it do to verify authenticity.

[bdz → OJFord]

If it's from the US then it was shot on a Kodak nitrate film, they can verify the stock

https://en.wikipedia.org/wiki/List_of_motion_picture_film_st...